{"location":{"city":"Kossaki","voivodeship":"Mazowieckie","community":"Nur","postalCode":"07-322","latitude":52.6456,"longitude":22.3657,"elevation":113},"climateZone":4,"standardOutsideTemp":-22,"annualMeanTemp":8.5,"monthly":[{"month":1,"outsideTemp":-2.33,"heatingDays":31,"degreeDayNum":630,"solarIrradianceKwhM2":21.7,"windSpeedAvg":5.49,"relativeHumidity":85.6,"outsideTempOnHeatingDays":-2.33},{"month":2,"outsideTemp":-1.42,"heatingDays":28,"degreeDayNum":549,"solarIrradianceKwhM2":39.5,"windSpeedAvg":5.44,"relativeHumidity":83.4,"outsideTempOnHeatingDays":-1.42},{"month":3,"outsideTemp":2.28,"heatingDays":31,"degreeDayNum":487,"solarIrradianceKwhM2":83.3,"windSpeedAvg":5.47,"relativeHumidity":77.1,"outsideTempOnHeatingDays":2.28},{"month":4,"outsideTemp":8.41,"heatingDays":29,"degreeDayNum":288,"solarIrradianceKwhM2":125.7,"windSpeedAvg":4.95,"relativeHumidity":71,"outsideTempOnHeatingDays":8.3},{"month":5,"outsideTemp":13.82,"heatingDays":26,"degreeDayNum":137,"solarIrradianceKwhM2":161.5,"windSpeedAvg":4.83,"relativeHumidity":70.2,"outsideTempOnHeatingDays":12.8},{"month":6,"outsideTemp":17.3,"heatingDays":17,"degreeDayNum":51,"solarIrradianceKwhM2":164.6,"windSpeedAvg":4.71,"relativeHumidity":70.4,"outsideTempOnHeatingDays":15.13},{"month":7,"outsideTemp":19.43,"heatingDays":10,"degreeDayNum":19,"solarIrradianceKwhM2":163.8,"windSpeedAvg":4.52,"relativeHumidity":71.3,"outsideTempOnHeatingDays":16.17},{"month":8,"outsideTemp":18.92,"heatingDays":12,"degreeDayNum":24,"solarIrradianceKwhM2":138.5,"windSpeedAvg":4.44,"relativeHumidity":70.7,"outsideTempOnHeatingDays":15.94},{"month":9,"outsideTemp":13.97,"heatingDays":26,"degreeDayNum":125,"solarIrradianceKwhM2":88.5,"windSpeedAvg":4.79,"relativeHumidity":76.5,"outsideTempOnHeatingDays":13.3},{"month":10,"outsideTemp":8.49,"heatingDays":30,"degreeDayNum":295,"solarIrradianceKwhM2":52.6,"windSpeedAvg":5.18,"relativeHumidity":81.5,"outsideTempOnHeatingDays":8.46},{"month":11,"outsideTemp":3.5,"heatingDays":30,"degreeDayNum":434,"solarIrradianceKwhM2":23.8,"windSpeedAvg":5.21,"relativeHumidity":86.4,"outsideTempOnHeatingDays":3.5},{"month":12,"outsideTemp":-0.62,"heatingDays":31,"degreeDayNum":577,"solarIrradianceKwhM2":15.3,"windSpeedAvg":5.33,"relativeHumidity":86.8,"outsideTempOnHeatingDays":-0.62}],"groundTemp1m":8.98,"groundTemp2m":8.98,"solarIrradianceKwhM2Year":1078.6,"windSpeedAvg":5.03,"relativeHumidityAvg":77.6,"suitability":{"score":61,"rating":"fair","color":"yellow","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.0 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:19:30.813Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}